Please try to follow the steps below: Step 1: Sign in on the MyAccount Portal, you can use the link below. Trend Micro Account

Step 2: Use the correct email and password that you husband used for the account. Step 3: Click on the ACCOUNT tab. Step 4: You can update the email and other personal information once you are on that tab that you want to update. Step 5: Click on Save once your done. I hope this helps. Thank you and have great day!